S13_Design and Construction of Recent Bridge Pier Protection_LTC2013

7/29/2019 S13_Design and Construction of Recent Bridge Pier Protection_LTC2013

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Design and Construction of Recent

Bridge Pier Protection Systems

Zolan Prucz and Buck Ouyang,

Modjeski and Masters, Inc.Rahman Bhati, Rahman and Assoc. Inc.

Paul Fossier, LADOTD

2013 Louisiana Transportation EngineeringConference

Baton Rouge, Louisiana


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Historical Developments

Lessons from Past Collisions

Current AASHTO Criteria

Bridge Pier Protection Projects:

- I-210 Prien Lake Bridge

- I-10 Mississippi River Bridge

- LA 27 Ellender Ferry Bridge

Outline


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Prior to 1980: Criteria was limited to specialprojects, movable bridge fenders

1980 1984: Increase in awareness andincreased research efforts

1984 1991: LADOTD Criteria for Vessel

Collision Design

After 1991: AASHTO Guide Specifications

AASHTO LRFD Bridge Design

AASHTO LRFD Movable Br. Design

Historical Developments


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May 26, 2002 M/V Robert Y. Love Tow Collision with the I-40 Bridge, OK

Lessons form Past Collisions

MM-62

MM-60

Pier 3 Pier 2 Pier 1Pier 4

West Abutment

Pier1


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Pier 3 Pier 2 Pier 1Pier 4

May 26, 2002 M/V Robert Y. Love Tow Collision with the I-40 Bridge, OK


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February 2, 2007 4 - Barge Tow Collision with the US 80 Bridge, Vicksburg


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May 9, 1980 Summit Venture Collision with the Sunshine Skyway Bridge


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May 9, 1980 Summit Venture Collision with the Sunshine Skyway Bridge


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September 27, 1996 Collision of the Julie N Tanker with the Million Dollar Bridge


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AASHTO Method II

AF = (N) (PA) (PG) (PC)

AF = Annual Frequency of Collapse

N = Annual Number of Vessels

PA = Probability of Vessel Aberrancy

PG = Geometric Probability

PC = Probability of Collapse

AF acceptable: < 0.0001 for Critical Bridges

< 0.001 for Regular Bridges

Current AASHTO Criteria

AASHTO Method I


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Vessel Collision Loads

Ships Barge Tows


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Ship Collision Loads

February 19, 1981 Collision of Tanker Gerd Maersk with Newport Bridge, RI.


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Barge Collision Loads


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BRIDGECHARACTERISTICS

WATERWAYCHARACTERISTICS

VESSEL TRAFFIC

CHARACTERISTICSNAVIGATION

CHARACTERISTICS

PERFORMANCE

CRITERIA

Approach to Bridge Pier Protection Design

PROTECTION

ALTERNATIVES


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I-210 Prien Lake Bridge Project


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Original Fender


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Vessel Traffic Characteristics


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I-210

Navigation Conditions


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Performance Criteria

Unusual Challenges: Large vessel sizes carrying chemicals

Difficult navigation conditions

Low global and local pier capacities

Limited space for a protection system


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Pier Protection Performance Requirements:

Longitudinal capacity- large impact loads;may deform or share resistance with thepier

Transverse capacity- less impact loads;

must be rigid enough to prevent contactwith the pier columns

Size - improve navigation, prevent contact

with pier columns and shaft Facing- smooth, low friction, prevent

sparks


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Pier Protection Solutions


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Concrete cap

Concrete walls

Micropiles


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Design and Construction


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Contractor: F. Miller Construction Company/ Orion Marine

Construction Company, Inc.

Subcontractor: Nicholson Construction Company, Inc. (Micropiles)


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8 DRILL HOLE WALL

CASING 7 OD

POST GROUT TUBE

GROUT

NO. 18 CENTER BAR

GROUT

POST GROUT TUBE

8 DRILL HOLE WALL

BOTTOM OF MICROPILE EL. -120

TOP OF MICROPILE CASING, EL. 5.0

DRILL HOLE WALL 8 DIAM.

MUDLINE, APPROX. EL. -30.0

BOTTOM OF CASING, EL. -65

TOP OF NO. 18 CENTER BAR


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I-10 Mississippi River Bridge Project

Pier 5


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Feb 2007 M/T KitionAllisionDWT = 96,315 Tonnes

L = 798 Feet, B = 137 Feet


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Bridge and Existing Fender Characteristics

Pier 5Pier 6


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Pier 5Pier 6 Pier 4

Pier 5


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Original Fender Characteristics


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Vessel Traffic Characteristics

Ship Traffic:25,000 to 125,000 DWT

Common Barge Tows:Hopper barge tows: 7 wide x 5 long

Tanker barge tows: 2 wide x 3 long


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Navigation Conditions

High volume ofthrough trafficcombined withlocal traffic

Docks and vesselanchorages nearthe bridge

Cross currents


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Performance Criteria

Unusual Challenges:

Large size ships and barge tows

Vessel maneuvering operations near bridge

Frequent accidents Low local pier capacities

Protruding underwater pier ledge

Deep water and high currents

Limited space for a protection system


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Pier Protection Performance Requirements:

Capacity-- strong and rigid enough to prevent

contact with the pier columns

- deformable / crushable to limit load

levels on the bridge pier

Size - prevent contact with pier columnsand underwater ledge

Facing- smooth, low friction, preventsparks


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Pier Protection Solutions


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Contractor: Weeks Marine, Inc., Houston, TX

Precaster: Standard Concrete Products, Theodore, AL


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LA 27 Ellender Ferry Bridge Project


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Vessel Traffic and Navigation Conditions

Common Barge Tows: Hopper barge tows: 2 wide x 4 long

Tanker barge tows: 2 wide x 2 long


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Lake Charles Pilots Association (I-210Bridge)

The LPA Group Inc. (I-210 Bridge)

F. Miller Construction, LLC. (I-210 Bridge

and Ellender Ferry Bridge) Weeks Marine, Inc. (I-10 Bridge)

Standard Concrete Products (I-10 Bridge)

Pictometry International Corporation LADOTD

Acknowledgements / Photo Credits:


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Todays design requirements specify vessel

collision loads that are significantly higherthan those considered in the past

New bridge piers are typically placed outsidethe channel or designed for collision loads.

Providing protection to existing bridgespresents design, construction and economicalchallenges.

The cost of providing protection to existingbridges based on current criteria can be ashigh as the cost of the bridge.

Summary


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Thank you!

S13_Design and Construction of Recent Bridge Pier Protection_LTC2013

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